Meterbase as Raceway?

Status
Not open for further replies.
E

electric1

Member
We are to install a new MCC inside a building. The 3ph, 200A., 480 VAC service on the outside consists of a disconnect and a meter can with a 3" nipple between them. The 480 volt service (underground) conductors from the transformer enter the bottom of the disconnect and are routed through the 3" nipple to the line side of the meter. The conductors on the load side of the meter are routed back through the 3" nipple to the line side of the disconnect. The conductors from the load side of the disconnect are then routed back through the 3" nipple and out the back of the meter base through a 2" nipple into the existing MCC. I cannot find it in the NEC, but does this not violate something (maybe art.110?)
 
Re: Meterbase as Raceway?

It sounds like you have service conductors and a feeder circuit in the same raceway. That would violate:
230.7 Other Conductors in Raceway or Cable.
Conductors other than service conductors shall not be installed in the same service raceway or service cable.
Click to expand...
 
Re: Meterbase as Raceway?

Ryan,
It appears that both sets of conductors are on the line side of the disconnect and both sets are service conductors. I don't see a NEC violtaion.
Don
 
Re: Meterbase as Raceway?

Don, refer to the section of text that I bold:

We are to install a new MCC inside a building. The 3ph, 200A., 480 VAC service on the outside consists of a disconnect and a meter can with a 3" nipple between them. The 480 volt service (underground) conductors from the transformer enter the bottom of the disconnect and are routed through the 3" nipple to the line side of the meter. The conductors on the load side of the meter are routed back through the 3" nipple to the line side of the disconnect. The conductors from the load side of the disconnect are then routed back through the 3" nipple and out the back of the meter base through a 2" nipple into the existing MCC. I cannot find it in the NEC, but does this not violate something (maybe art.110?)
Click to expand...
I beleive it is here that 230.7 is violated.

[ July 16, 2004, 06:42 PM: Message edited by: ryan_618 ]
 
Re: Meterbase as Raceway?

Ryan,
You're correct, I missed the third set of conductors in the nipple.
Don
 
Status
Not open for further replies.
Top